Reference : Combined implicit-explicit algorithms for non-linear structural dynamics
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/2268/218
Combined implicit-explicit algorithms for non-linear structural dynamics
English
Noels, Ludovic mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Milieux continus et thermomécanique >]
Stainier, Laurent [Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Milieux continus et thermomécanique >]
Ponthot, Jean-Philippe mailto [Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire >]
Bonini, Jérôme [Snecma > > > >]
2002
Revue Européenne des Éléments Finis
Hermes
11
5
Simulation numérique et dynamique rapide
565-591
Yes
International
1250-6559
France
[en] contact ; impact ; implicit-explicit
[en] To solve fast dynamic problems, an explicit method is the most adapted. But for slower dynamics, an implicit method is more stable. The industrial problems are governed by high frequency (impact, ...) during short time intervals and slower dynamics (spring-back, ...) during other time intervals. The optimal solution is then to have both implicit algorithm and explicit methods readily available in the same code and to be able to switch automatically from one to another. Criteria that decide when to shift from a method to another have been developed here. Implicit balanced restarting conditions that annihilate numerical oscillations resulting for an explicit calculation are also proposed.
Researchers ; Professionals
http://hdl.handle.net/2268/218
10.3166/reef.11.565-591
http://dx.doi.org/10.3166/reef.11.565-591

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